ASTROSAT CZTI

Data Quality Report

Orbit 21512

Creation date: 2024-06-27T18:28:49.023127
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_141T01_9000003174_21512cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21512cztM0_level2_quad_clean.evt
Size (bytes)534,507,840104,742,720
Size509.7 MB 99.9 MB
Events in quadrant A3,409,253685,224
Events in quadrant B3,589,568699,444
Events in quadrant C3,420,420678,535
Events in quadrant D5,298,535626,754

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144050
B0148380
C0144360
D0202010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69291231.775148%
B69291452.092654%
C69291482.135950%
D69286138.848152%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7594 6930 1 1 0.01% 0.01%
B 7594 6930 9 9 0.12% 0.13%
C 7594 6930 0 0 0.00% 0.00%
D 7593 6929 396 396 5.22% 5.72%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 98 12735 67.38 880 862 176.2
A 13 254 11012 57.6 880 862 176.2
A 0 226 7466 37.48 880 862 176.2
B 3 64 49647 295.64 874 851 165.1
B 10 249 43937 261.04 874 851 165.1
B 0 230 40746 241.71 874 851 165.1
C 14 238 131574 665.21 842 848 196.5
C 0 239 6901 30.8 842 848 196.5
C 13 61 5912 25.77 842 848 196.5
D 1 52 1465685 7309.26 829 805 200.4
D 14 35 227243 1129.85 829 805 200.4
D 13 174 181453 901.37 829 805 200.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter